Shoe shank



FIG. 1 is a top plan view of a shoe shank, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is an end elevational view thereof;

FIG. 5 is an opposite end elevational view thereof;

FIG. 6 is a top right perspective view thereof. 

The ornamental design for a shoe shank, as shown and described. 